Battery charger



FIG. 1 is a top view of the battery charger;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a left side view of the present invention, the right side view being a mirror image of the left side view;

FIG. 5 is a perspective view of the present invention; and,

FIG. 6 is a bottom view of the present invention. 

CLAIM The ornamental design for a battery charger, as shown and described. 